Originally Posted by
Bigz84
Hello,
w/ the stock 76t spur, what is the largest pinion that can fit? will a 59t pinion fit? or should I get a smaller spur to get a smaller pinion in there to run 17.5 stock, blinky.
CRC makes a 72 that should work. Keep in mind they are 3/32" balls though. I found that regardless what spur/pinion you use, the maximum number of teeth total can be 133. Ie, 76/57, 72/61, etc. For 17.5 you should shoot for 100-110mm of rollout depending on the track/motor.